Estimation of Mineral Resources & Mineral Reserves

These guidelines are intended to assist the Qualified Person(s) (QP) in the planning, supervision, preparation, and reporting of Mineral Resource and Mineral Reserve (MRMR) estimates.

Estimation of Mineral Resources & Mineral Reserves Best Practice Guidelines

The "General Guidelines" deal primarily with the description of best practice as it applies to metalliferous deposits. The Committee recognizes that certain commodities require specialized treatments. Some such commodities have been considered by appropriate sub-committees of experts and their reports follow the "General Guidelines" below.

Published by: CIM Estimation Best Practice Committee

Published on: November 23, 2003

Coal Guidelines

Best practice guidelines specific to coal estimation

Published by: CIM Estimation Best Practice Committee

Published on: November 23, 2003

Industrial Minerals

Estimation of Mineral Resources and Mineral Reserves for industrial minerals requires special care. The estimation of an industrial minerals deposit is affected to a significant degree by a number of factors that are less applicable to metallic mineral deposits, including: particular physical and chemical characteristics; mineral quality issues; market size; the level of the producer’s technical applications knowledge; market concentration; and transportation costs.

Published by: CIM Estimation Best Practice Committee

Published on: November 23, 2003

Lateritic Deposits

Lateritic deposits are a group of residual deposits that typically develop as soils in areas with warm, wet climates. These are mainly surficial deposits, though some have been buried and are mined via underground methods.

Published by: CIM Estimation Best Practice Committee

Lithium Brine Resources

These guidelines were prepared by the Sub-Committee on Best Practice Guidelines for Resource and Reserve Estimation for Lithium Brines. The procedures and concepts presented below represent the state of the current understanding of the best practices that are applicable to the estimation of brine resources and brine reserves for lithium and other valuable metal ions in brine deposits. It is acknowledged that these practices are likely to evolve and improve with time as additional experience is gained from this deposit type. It is anticipated that these improvements will be the subject of and included in subsequent revisions of these Best Practices.

This document is currently under review. 

Published by: CIM Estimation Best Practice Committee

Published on: November 01, 2012

Placer Deposit Guidelines

Placer deposits include several different types of commodities and a range of geological environments. The three deposit types discussed here are considered to have specific technical issues that require specialized knowledge. They are: 1- Mineral sands 2- Placer gold 3- Alluvial diamonds

Published by: CIM Estimation Best Practice Committee

Potash Guidelines

Estimation guidelines for potash deposits

Published by: CIM Estimation Best Practice Committee

Published on: November 23, 2003

Rock Hosted Diamonds

Due to diamonds' distinguishing aspects, diamond-specific guidelines are appropriate to complement the CIM Best Practices Guidelines. Diamonds are different from other minerals: they occur as discrete particles in concentrations as low as parts per billion; the release of diamonds from the host rock is a function of excavation and processing; the value of diamonds varies from deposit to deposit and varies with stone size within a given deposit. These aspects must be considered when sampling, evaluating the resource and establishing the reserve of a deposit.

Published by: CIM Estimation Best Practice Committee

Published on: March 01, 2008

Uranium Guidelines

The General Guidelines for other metals, outlined in the Best Practice Guidelines, are also applicable to uranium deposits. However, because of the radioactive nature of uranium, and in some cases the amenability of this metal to In Situ Leach (ISL) mining methods, additional guidelines are appropriate.

Published by: CIM Estimation Best Practice Committee

Published on: November 23, 2003